From cb58fbfd5496e20bf5393e8d73709680eb553771 Mon Sep 17 00:00:00 2001
From: Ellen <ellenvonehrenwall@hotmail.de>
Date: Thu, 6 Feb 2020 15:56:31 +0100
Subject: [PATCH] initial commit

---
 main.go | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 main.go

diff --git a/main.go b/main.go
new file mode 100644
index 0000000..9b3f6d2
--- /dev/null
+++ b/main.go
@@ -0,0 +1,31 @@
+package main
+
+import (
+	"fmt"
+	"runtime"
+)
+
+func main() {
+	numThreads := runtime.NumCPU()
+	fmt.Printf("I have : %d threads\n", numThreads)
+	ch := make(chan int)
+	for i := 0; i < numThreads; i++ {
+		go sumOf3n5Multiples(1000, numThreads, 3+i, ch)
+	}
+	j := 0
+	for i := 0; i < 8; i++ {
+		j += <-ch
+
+	}
+	fmt.Printf("%d", j)
+}
+
+func sumOf3n5Multiples(maxNumber int, stepSize int, start int, ch chan int) {
+	var sum = 0
+	for i := start; i < maxNumber; i += stepSize {
+		if i%3 == 0 || i%5 == 0 {
+			sum += i
+		}
+	}
+	ch <- sum
+}